One of the biggest barriers to sustainability rest in the current linear “take-make-dispose” economic model. Looking beyond the model, a circular economy aims to redefine growth, focusing on positive society-wide benefits, by e.g. designing waste out of the system. Widely referenced is the definition by the Ellen MacArthur Foundation. The model distinguishes between technical and biological cycles. Consumption happens only in biological cycles, where food and biologically-based materials (such as cotton or wood) are designed to feed back into the system through processes like composting and anaerobic digestion. Technical cycles recover and restore products, components, and materials through strategies like reuse, repair, remanufacture or (in the last resort) recycling.
Products that not only are recyclable, but also produced with a maximum of recyclable substances and renewable energy, are certified as Cradle-to-Cradle (C2C). Among the C2C certified products are specific zinc sheet qualities and galvanized steel surfaces.
Zinc metal uses, such as galvanized steel and zinc sheet, are known for their durability.
Zinc metals are recycled with high collection and EoL recycling rates.
When zinc is used as fertilizer it moves from the technical into the biological cycle and returns to nature.
This circular economy contributes to the UN SDGs # 9, 11, and 13.
Fuente : International Zinc Association www.zinc.org